Polyatomic Ions

acetate

C₂H₃O₂^-

ammonium

NH₄⁺

carbonate

CO₃^2-

hydrogen carbonate (bicarbonate)

HCO₃^-

hypochlorite

ClO^-

chlorite

ClO₂^-

chlorate

ClO₃^-

perchlorate

ClO₄^-

cyanide

CN^-

chromate

CrO₄^2-

dichromate

Cr₂O₇^2-

hydroxide

OH^-

nitrite

NO₂^-

nitrate

NO₃^-

permanganate

MnO₄^-

phosphite

PO₃^3-

phosphate

PO₄^3-

sulfite

SO₃^2-

sulfate

SO₄^2-